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Observational effort to record Fresnel patterns during a total solar eclipse

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Summary

The observation of Fresnel diffraction patterns at 2nd and 3rd contact and efforts to correlate the time elements of a total solar eclipse at low elevation are discussed. The measurements were intended to determine atmospheric refraction at three optical wavelengths. A laboratory model of the system sun-moon-earth was employed for testing the recording instruments at the fast response times that are necessary for such observations.

Zusammenfassung

Diskutiert werden die Vorbereitungen zur Beobachtung von Fresnelschen Beugungsstreifen im Mondschatten, wenn 2. und 3. Kontakt einer Sonnenfisternis in die Sonnenaufgangszone fallen (streifender Lichteinfalt). Bei Kenntnis des Mondrandes kann man die Auswertung der Beugungsfiguren mit den Konjunktionszeiten korrelieren. Vergleiche mit den errechneten Ephemeriden ermöglichen eine Bestimmung der atmosphärischen Refraktion. Ein Modell diente zur Prüfung der Beobachtungsapparaturen.

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  1. 8703 Burdette Road, 20034, Bethesda, Maryland, USA

    Reinhold Gerharz

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  1. Reinhold Gerharz
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Gerharz, R. Observational effort to record Fresnel patterns during a total solar eclipse. PAGEOPH 96, 163–166 (1972). https://doi.org/10.1007/BF00875638

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  • DOI: https://doi.org/10.1007/BF00875638

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